JP2016223355A - Transport machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transport machine capable of retaining a member to be provided on an upstream side of a throttle body.SOLUTION: A snowmobile 10 is provided with: an engine 48 having a head part 74 including a cylinder head 78; a supercharger 52; an intake manifold 56; a throttle body 60; first joint parts 58a-58c for coupling the intake manifold 56 with the throttle body 60; a second joint part 64 for coupling the throttle body 60 with the cylinder head 78; and a restriction member 62 for coupling the head part 74 with the first joint parts 58a-58c. The restriction member 62 includes: an engaging member 124 for engaging into groove parts of the first joint parts 58a-58c; and coupling members 126a, 126b for coupling the engagement member 124 with the head part 74. An interval between the adjacent first joint parts 58b and 58c through which a steering shaft 110 passes is larger than an interval between the other adjacent first joint parts 58a and 58b.SELECTED DRAWING: Figure 10

Description

  The present invention relates to transportation equipment, and more particularly to transportation equipment including a supercharged engine and a throttle body.

  2. Description of the Related Art Conventionally, transportation equipment such as a motorcycle has been proposed in which a throttle body is fixed to a cylinder head of an engine via a rubber throttle holder. When a supercharger is attached to such an engine, the pressure in the intake passage is increased by the supercharging, so that the rubber throttle holder may come off from the cylinder head. Therefore, in Patent Document 1 in which a throttle body mounting structure in an engine with a supercharger is disclosed, a chamber holder to which the throttle body is fixed is fixed to a cylinder head, so that a throttle holder on the downstream side of the throttle body can be removed. Trying to prevent.

WO2011 / 078343

  Patent Document 1 is intended to prevent a member on the downstream side of the throttle body from slipping out on the assumption of a motorcycle, but in the case of an engine used for other transportation equipment, as an intake pipe on the upstream side of the throttle body, An intake passage structure having elasticity may be employed. In this case, the intake pipe on the upstream side of the throttle body may come off.

  Therefore, a main object of the present invention is to provide a transportation device capable of preventing a member provided on the upstream side of the throttle body from coming off.

  In order to achieve the above object, an engine having a head portion including a cylinder head and a head cover provided on the cylinder head, a throttle body for supplying intake air to the cylinder head, a supercharger, and a supercharger from the supercharger An intake manifold through which the compressed air is sent, a first joint part that connects the intake manifold and the throttle body so as to communicate with each other, and a head part and a first part that restrict relative movement of the first joint part with respect to the head part. There is provided a transportation device including a restricting member that connects one joint portion.

  In the present invention, since the restricting member restricts the movement of the first joint portion, even if the intake pressure upstream of the throttle body increases, the first joint portion, which is a member provided on the upstream side of the throttle body, is separated from the throttle body. It can be prevented from coming off. Since the first joint can be prevented from coming off in this way, it is not necessary to use a throttle body with a special structure, and an existing throttle body for a naturally aspirated engine that does not have a supercharger can be easily used for a turbocharged engine. Can be shared.

  Preferably, the first joint part includes an elastic body. In this case, even if an external force is applied to the first joint portion, the external force can be absorbed and the first joint portion can be more reliably prevented from coming off.

  Preferably, the first joint portion includes a groove portion formed on an outer peripheral surface thereof, and the limiting member includes an engaging member that fits into the groove portion, and a connecting member that connects the engaging member and the head portion. In this case, a limiting member that limits the movement of the first joint portion in the axial direction can be easily configured. Further, the throttle body can be fixed by connecting the engaging member and the head portion so that the throttle body is sandwiched between the engaging member and the head portion that are fitted in the groove portion of the first joint portion. Can prevent the throttle body from coming off.

  More preferably, the groove portion is formed in an annular shape in the circumferential direction of the outer peripheral surface of the first joint portion, and the engagement member has a substantially C-shaped engagement portion that fits into the groove portion. In this way, the groove portion is formed in an annular shape, and the engagement member has an engagement portion that is substantially C-shaped, that is, an engagement portion that covers the circumferential direction of the first joint portion and is not connected in part. The engaging member can be easily attached to and detached from the groove.

  Preferably, the connecting member includes a collar provided between the engaging member and the head portion, and a bolt that passes through the collar and connects the engaging member and the head portion. In this case, by causing the collar to function as a spacer, the distance between the engaging member and the head portion can be kept constant, and the engaging member and the head portion can be easily connected by a bolt.

  Preferably, the engine has a plurality of cylinders, a first joint portion is provided for each cylinder, and the engaging member is continuous with the plurality of first joint portions. In this case, one engagement member is fitted in each groove of the plurality of first joint portions. Therefore, even when there are a plurality of first joint portions, only one engaging member is required, and a plurality of first joint portions are connected by connecting a plurality of first joint portions using one engaging member. Can be kept constant.

  More preferably, the connecting member is provided on both sides of the plurality of cylinders. In this case, since the connecting members are provided on one side and the other side of the plurality of cylinders, and each connecting member connects the engaging member and the head portion, the limiting member moves the first joint portion. Can be more reliably limited, and the first joint portion can be more reliably prevented from coming off.

  Preferably, a second joint portion that connects the cylinder head and the throttle body and includes an elastic body is further provided. In this case, the cylinder head and the throttle body can be fixed by the second joint portion made of an elastic body.

  Preferably, the second joint portion includes a spigot. In this case, the cylinder head and the throttle body can be more reliably fixed by the spigot.

  More preferably, the engine has a plurality of cylinders, and the first joint portion further includes a steering shaft that is provided for each cylinder and passes between adjacent first joint portions. When an intake manifold is directly connected to the throttle body and an attempt is made to pass a steering shaft between the intake manifold and the throttle body, there is a possibility that the steering shaft cannot be passed because the space between the bores of adjacent intake manifolds is narrow. . Therefore, by connecting the intake manifold and each throttle body by the first joint portion, a space for passing the steering shaft between the adjacent first joint portions can be secured, and the steering shaft is provided between the intake manifold and the throttle body. Even when trying to pass, a steering shaft can be attached.

  Preferably, the first joint part includes an elastic body. In this case, since the degree of freedom of the shape of the first joint portion increases, it becomes easier to secure a space for passing the steering shaft between the adjacent first joint portions, and the steering shaft can be attached more easily.

  Preferably, the engine has at least three cylinders, and an interval between adjacent first joint portions through which the steering shaft passes is larger than an interval between other adjacent first joint portions. In this case, the steering shaft can be easily passed between the adjacent first joint portions, and the position where the steering shaft is passed can be easily recognized.

  In the present invention, since the restricting member restricts the movement of the first joint portion and prevents the first joint portion from coming off, the throttle body of the model not equipped with the supercharger can be shared with the engine with the supercharger. Therefore, the present invention can be suitably used for a snowmobile equipped with a supercharger.

  According to the present invention, it is possible to prevent the member provided on the upstream side of the throttle body from coming off.

1 is a perspective view showing a snowmobile according to an embodiment of the present invention. It is a side view (seen from the left) which shows the snowmobile which concerns on one Embodiment of this invention. It is a perspective view which shows the snowmobile which removed the shroud. It is a side view (viewed from the left) which shows the vehicle body which removed the shroud. It is a side view (viewed from the right side) which shows the vehicle body which removed the shroud. It is a front view which shows the vehicle body which removed the shroud. It is a top view which shows the vehicle body which removed the shroud. It is a top view which shows an engine and its vicinity. It is a perspective view which shows an engine, an intake manifold, and its vicinity. It is a perspective view which shows an engine, an intake manifold, and its vicinity. It is a cross-sectional solution figure which shows an intake manifold, a 1st joint part, a throttle body, an engine, etc. It is a figure which shows a 1st joint part. It is a figure which shows an engaging member, (a) is a perspective view, (b) is a front view. It is a figure which shows the state which attached the intake manifold and the limitation member to the 1st joint part.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In the embodiment of the present invention, front and rear, left and right, and top and bottom mean front and rear, left and right, and top and bottom, based on a state where the driver is seated on the seat 46 of the snowmobile 10 toward the steering handle 108.

  Referring to FIGS. 1 and 2, snowmobile 10 is configured as a straddle-type transport device, and includes a vehicle body 12, a pair of left and right skis 14, and a drive unit 16.

  The pair of skis 14 are provided to extend in the front-rear direction in parallel to each other so as to sandwich the vehicle body 12. The pair of skis 14 are supported on the front portion of the vehicle body 12 via left and right suspension mechanisms 18. Although only the left suspension mechanism 18 is shown in FIG. 1, the suspension mechanism 18 is also provided on the right side.

  The drive unit 16 is provided below the vehicle body 12. The drive unit 16 includes drive wheels (not shown), driven wheels 20 and track belts 22. The driving wheels are rotationally driven by the driving force transmitted from CVT 70 (described later). The track belt 22 is looped around the drive wheel and the driven wheel 20 and is driven to rotate as the drive wheel is rotationally driven. The driven wheel 20 rotates following the circulation drive of the track belt 22.

  3 to 7, the vehicle body 12 includes a frame 24. The frame 24 includes a plate-shaped main frame portion 26 extending in the front-rear direction of the snowmobile 10, a front frame portion 28 provided at a front end portion of the main frame portion 26, an upper surface of the main frame portion 26, and an abbreviation of the main frame portion 26. And a support frame portion 30 provided in front of the center portion. The support frame portion 30 includes frame members 32a and 32b extending obliquely upward and forward from a substantially central portion of the upper surface of the main frame portion 26, and a frame member extending upward from a position in front of the frame members 32a and 32b on the upper surface of the main frame portion 26. 32c, 32d, frame members 32e, 32f extending rearward and obliquely upward from the front frame portion 28, and a connecting portion 34 connecting the upper ends of the frame members 32a-32f. Left and right footrest portions 36a and 36b are provided at substantially central portions on both left and right sides of the main frame portion 26 so as to extend in the front-rear direction. The lower surface of the main frame portion 26 forms a ceiling surface of a track house (not shown) that houses the track belt 22.

  1 and 2, a front shroud 38 is connected to the front of the vehicle body 12, a side shroud 40a, 40b, and a side shroud 40a, 40b are connected to both sides of the vehicle body 12, respectively. Are provided. The front shroud 38, the side shrouds 40 a and 40 b, and the rear shroud 42 are provided so as to surround the support frame portion 30 and are attached to the frame 24. A windshield 44 is provided at the upper end of the front shroud 38. A seat 46 is provided on which the driver sits so as to extend rearward from the rear shroud 42 above the main frame portion 26. A fuel tank 47 is provided between the main frame portion 26 and the seat 46.

  In the space surrounded by the main frame portion 26, the front shroud 38, the side shrouds 40a and 40b, and the rear shroud 42, and in the vicinity of the connecting portion 34, an engine 48, an air cleaner 50, a supercharger 52, and an intercooler 54 are provided. The intake manifold 56, the first joint portions 58a to 58c, the throttle body 60, the limiting member 62, the second joint portion 64, the exhaust manifold 66, the muffler 68, and the CVT 70 are provided.

  The engine 48 is provided on the main frame 26 in front of the central portion of the main frame 26. With reference to FIG. 7, the engine 48 is provided so as to overlap the connecting portion 34 in the plan view of the snowmobile 10.

  Referring to FIGS. 8 to 10, engine 48 is, for example, a water-cooled four-cycle parallel three-cylinder engine, and includes a cylinder block 72, a head portion 74, and a crankcase 76. The head unit 74 includes a cylinder head 78 and a head cover 80. The cylinder block 72 has a plurality (three in this embodiment) of cylinders 82 arranged side by side in the vehicle width direction (see FIGS. 8 and 11). A cylinder head 78 is provided above the cylinder block 72, a head cover 80 is provided above the cylinder head 78, and a crankcase 76 is provided below the cylinder block 72. A crankshaft 84 is accommodated in the crankcase 76. The cylinder axis of the engine 48 is inclined so that the upper side is located behind the lower side. That is, the engine 48 is tilted backward.

  Referring to FIG. 11, a combustion chamber 86 is provided inside the cylinder head 78. A plurality of (three in this embodiment) intake ports 88 communicating with the combustion chamber 86 are provided at the front of the cylinder head 78, and a plurality of (three in this embodiment) communicating with the combustion chamber 86 are provided at the rear of the cylinder head 78. ) Exhaust port (not shown).

  3-7, an air cleaner 50 is provided on one side of the engine 48 (left side in this embodiment), and a supercharger 52 is provided on the other side of the engine 48 (right side in this embodiment). An intercooler 54 is provided in front of the front frame portion 28, and an intake manifold 56 is provided behind the intercooler 54 and in front of the engine 48. The supercharger 52 to which the air sucked into the air filter 50 is given includes a compressor 90 and a turbine 92. The air cleaner 50 and the compressor 90 are connected via an intake pipe 94, the compressor 90 and the intercooler 54 are connected via an intake pipe 96, and the intercooler 54 and the inlet of the intake manifold 56 are connected via an intake pipe 98. It is connected. A plurality of (three in this embodiment) outlets of the intake manifold 56 are connected to corresponding throttle bodies 60 via first joint portions 58a, 58b, and 58c, and each throttle body 60 is connected to a second joint portion 64. To the corresponding intake port 88 of the engine 48 (see FIG. 11). The intake manifold 88 to the intake port 88 of the engine 48 and the structure in the vicinity thereof will be described in detail later.

  An exhaust manifold 66 is provided behind the engine 48, and a muffler 68 is provided on the other side of the engine 48 (right side in this embodiment) and outside the supercharger 52. A plurality of (three in this embodiment) inlets of the exhaust manifold 66 are respectively connected to the corresponding exhaust ports of the engine 48, and the outlet of the exhaust manifold 66 is connected to the turbine 92 of the supercharger 52 via the exhaust pipe 100. The turbine 92 is connected to the muffler 68 via the exhaust pipe 102.

  Referring to FIGS. 3 and 4, CVT 70 has a drive pulley 104 and a driven pulley 106. The drive pulley 104 is disposed on one side of the engine 48 (left side in this embodiment) and is connected to the crankshaft 84 of the engine 48. The driven pulley 106 is disposed behind the driving pulley 104, and a belt (not shown) is stretched between the driving pulley 104 and the driven pulley 106.

  With reference to FIGS. 1 and 2, a steering handle 108 and a steering shaft 110 are provided in front of the seat 46 in the vehicle body 12. The steering shaft 110 is coupled to the steering handle 108 so as to interlock with the steering handle 108. The steering shaft 110 passes between the intake manifold 56 and the throttle body 60 and is connected to the pair of skis 14 via a connecting portion (not shown).

  Here, the intake port 88 of the engine 48 from the intake manifold 56 and the structure in the vicinity thereof will be described.

  With reference to FIGS. 8 to 11, the outlet pipes 112a, 112b, and 112c of the intake manifold 56 to which the supercharged air is sent from the supercharger 52 are respectively connected to the front ends of the first joint parts 58a, 58b, and 58c. Are connected. The first joint portions 58a, 58b, and 58c correspond to the cylinders 82 of the engine 48. The first joint portions 58a, 58b, and 58c each include an elastic body such as rubber, are formed in a hollow tubular shape, and are preferably rubber hoses made of polyalloy of nitrile rubber and polyvinyl chloride. Referring to FIG. 12, first joint portions 58a, 58b, and 58c are respectively groove portions 113a, 113b, and 113c formed at one end portion of the outer peripheral surface, and groove portions 114a and 113a formed at the other end portion of the outer peripheral surface. 114b, 114c and groove portions 115a, 115b, 115c. The groove portions 113a, 113b, 113c are each formed in an annular shape in the circumferential direction of the outer peripheral surface end portion on the intake manifold 56 side of the first joint portions 58a, 58b, 58c. The groove portions 114a, 114b, and 114c are formed annularly in the circumferential direction of the outer peripheral surface of the first joint portions 58a, 58b, and 58c on the throttle body 60 side, respectively. The groove portions 115a, 115b, and 115c are respectively formed annularly in the circumferential direction of the outer peripheral surface end portion (the end portion side of the groove portions 114a, 114b, and 114c) of the first joint portions 58a, 58b, and 58c on the throttle body 60 side. . Referring to FIG. 14, the interval between adjacent first joint portions 58b and 58c through which steering shaft 110 passes is larger than the interval between other adjacent first joint portions 58a and 58b. Referring to FIGS. 12 to 14, of the engaging members 124 (described later) of the adjacent first joint portions 58 b and 58 c and the restricting member 62, the portions facing the steering shaft 110 are respectively provided with recesses 116 a, 116 b, 116c is formed. A corresponding throttle body 60 is connected to each of the rear end portions of the first joint portions 58a, 58b, and 58c. Therefore, the first joint portions 58a, 58b, and 58c are respectively provided behind the intake manifold 56 and in front of the throttle body 60, and connect the intake manifold 56 and the throttle body 60 so as to communicate with each other. Referring also to FIG. 11, bands 117a, 117b, and 117c are attached to the grooves 113a, 113b, and 113c, respectively, so that air leaks from between the intake manifold 56 and the first joint portions 58a, 58b, and 58c. Is preventing. Bands 118a, 118b, and 118c are attached to the groove portions 115a, 115b, and 115c, respectively, thereby preventing air leakage between the first joint portions 58a, 58b, and 58c and the throttle body 60.

  With reference to FIGS. 8 and 11, the throttle body 60 is provided in front of the engine 48 for each cylinder 82. Each throttle body 60 is formed in a cylindrical shape having openings at both ends. Each throttle body 60 has an air inlet 60a at one end, an air outlet 60b at the other end, and an intake passage 60c therein. The rear end portions of the first joint portions 58a, 58b, and 58c are connected to the air suction ports 60a. A corresponding intake port 88 of the engine 48 is connected to each air outlet 60b via a corresponding second joint portion 64. That is, the throttle body 60 and the cylinder head 78 are connected by the second joint part 64. The second joint portion 64 preferably includes a spigot including an elastic body such as rubber. The intake air from the intake manifold 56 is supplied to the cylinder head 78 through the throttle body 60. The throttle valve 119 is provided in the intake passage 60 c of the throttle body 60. The throttle valve 119 is provided so as to be able to be opened and closed between a fully closed position and a fully opened position, and adjusts intake air to the engine 48.

  Referring to FIGS. 9 and 11, fuel injection valve 120 is provided above throttle body 60. The tip of the fuel injection valve 120 is inserted into the intake passage 60 c in the throttle body 60. A common fuel pipe 122 is connected to each fuel injection valve 120. A fuel pump (not shown) is connected to the fuel pipe 122. The fuel in the fuel tank 47 is supplied to each fuel injection valve 120 through the fuel pipe 122 by the fuel pump, and is supplied from the fuel injection valve 120 to the intake port 88 through the throttle body 60. In this embodiment, for example, so-called electronic throttle control is performed.

  With reference to FIGS. 9 to 11 and 14, the head portion 74 and the first joint portions 58 a, 58 b, 58 c are limited so as to limit the relative movement of the first joint portions 58 a, 58 b, 58 c with respect to the head portion 74. Are connected by a restricting member 62. The restricting member 62 fits into the groove portions 114a, 114b, and 114c (see FIG. 12) and connects the engaging member 124 fixed to the first joint portions 58a, 58b, and 58c, and the engaging member 124 and the head portion 74. Connecting members 126a and 126b. Referring also to FIG. 13, the engagement member 124 has engagement portions 128a, 128b, and 128c in a substantially C shape that fits into the groove portions 114a, 114b, and 114c, and has a plurality (three in this embodiment) of first portions. One joint portion 58a, 58b, 58c is formed to be continuous. Referring also to FIG. 8, the connecting members 126 a and 126 b are provided on both sides of the plurality of cylinders 82. That is, the connecting members 126 a and 126 b are provided on the left outer side and the right outer side in the width direction of the snowmobile 10 rather than the entire plurality of cylinders 82. The connecting member 126a is provided in the vicinity of the first joint portion 58a, and is inserted between the collar 130a provided between the engaging member 124 and the boss 78a formed on the cylinder head 78 of the head portion 74, and the collar 130a. A bolt 132a that connects the engaging member 124 and the cylinder head 78 of the head portion 74 is included. Similarly, the connecting member 126b is provided in the vicinity of the first joint portion 58c, and a collar 130b provided between the engaging member 124 and a boss (not shown) formed on the cylinder head 78 of the head portion 74. , And a bolt 132b for inserting the engagement member 124 and the cylinder head 78 of the head portion 74 through the collar 130b. At the time of assembly, for example, the first joint portions 58a, 58b, 58c are fitted into the engagement member 124, and the engagement member is sandwiched between the first joint portions 58a, 58b, 58c and the head portion 74. 124 is fixed to the head portion 74 by connecting members 126a and 126b.

  FIG. 11 shows a structure from the outlet pipe portion 112 a of the intake manifold 56 to the corresponding cylinder 82 of the engine 48. A structure from the outlet pipe 112b (see FIG. 9) of the intake manifold 56 to the corresponding cylinder 82 of the engine 48, and a structure from the outlet pipe 112c (see FIG. 9) of the intake manifold 56 to the corresponding cylinder 82 of the engine 48. Is substantially the same as the structure from the outlet pipe portion 112a of the intake manifold 56 to the corresponding cylinder 82 of the engine 48, and can be easily understood by referring to FIG.

  Referring to FIGS. 8, 9, and 14, steering shaft 110 is provided between adjacent first joint portions 58 b and 58 c, more specifically, first joint portions 58 b and 58 c, and restriction member 62. It passes through a space S surrounded by the engaging member 124 and the intake manifold 56.

  According to such a snowmobile 10, the restricting member 62 restricts the movement of the first joint portions 58 a, 58 b, 58 c, so that even if the intake pressure upstream of the throttle body 60 becomes high, the upstream of the throttle body 60 It is possible to prevent the first joint portions 58a, 58b, and 58c, which are members provided on the side, from coming off the throttle body 60. Since the first joint portions 58a, 58b, and 58c can be prevented from coming off in this way, it is not necessary to use the throttle body 60 having a special structure, and an existing throttle body for a naturally aspirated engine that does not include the supercharger 52 is used. The engine 48 equipped with the supercharger 52 can be easily shared.

  Since the first joint portions 58a, 58b, and 58c include an elastic body, even if an external force is applied to the first joint portions 58a, 58b, and 58c, the external force can be absorbed and the first joint portions 58a, 58b, and 58c can come off. Can be prevented more reliably. In other words, a member on the upstream side of the throttle body 60 can be more reliably assembled to the throttle body 60 by adopting a configuration substantially equivalent to that obtained by changing a part of an existing intake manifold to a rubber hose.

  The restricting member 62 includes an engaging member 124 that fits into the groove portions 114a, 114b, and 114c, and connecting members 126a and 126b that connect the engaging member 124 and the head portion 74, whereby the first joint portions 58a, 58b, The limiting member 62 that limits the movement of the 58c in the axial direction can be easily configured. Further, the coupling members 126a and 126b are engaged with the engaging member 124 so that the throttle body 60 is sandwiched between the engaging member 124 and the head portion 74 fitted in the grooves 114a, 114b, and 114c of the first joint portions 58a, 58b, and 58c. By connecting the head portion 74 to the throttle body 60, the throttle body 60 can be fixed, and the throttle body 60 can be prevented from coming off due to high pressure.

  The groove portions 114a, 114b, and 114c are formed in an annular shape, and the engaging member 124 covers and partially covers the circumferential direction of the substantially C-shaped engaging portions 128a, 128b, and 128c, that is, the first joint portions 58a, 58b, and 58c. By having the engaging portions 128a, 128b, and 128c that are not connected, the engaging member 124 can be easily attached to and detached from the groove portions 114a, 114b, and 114c.

  By causing the collars 130a and 130b to function as spacers, the spacing between the engaging member 124 and the head portion 74 can be kept constant, and the engaging member 124 and the head portion 74 can be easily connected by the bolts 132a and 132b. .

  The engaging member 124 is continuous with the plurality of first joint portions 58a, 58b, 58c. That is, one engagement member 124 is fitted in each groove 114a, 114b, 114c of the plurality of first joint portions 58a, 58b, 58c. Therefore, even if there are a plurality of first joint portions 58a, 58b, 58c, only one engagement member 124 is required. Further, by connecting the plurality of first joint portions 58a, 58b, 58c using one engagement member 124, the positional relationship between the plurality of first joint portions 58a, 58b, 58c can be kept constant.

  Connecting members 130 a and 130 b are provided on one side and the other side of the plurality of cylinders 82, respectively, and the connecting members 130 a and 130 b connect the engaging member 124 and the head portion 74. That is, the head portion 74 and the engaging member 124 functioning as a bracket are connected at two locations. Therefore, the restricting member 62 more reliably restricts the movement of the first joint portions 58a, 58b, and 58c, and can more reliably prevent the first joint portions 58a, 58b, and 58c from coming off.

  For example, the cylinder head 78 and the throttle body 60 can be fixed by the second joint portion 64 made of an elastic body.

  Since the second joint portion 64 is formed of a spigot, the cylinder head 78 and the throttle body 60 can be more reliably fixed.

  By connecting the intake manifold 56 and each throttle body 60 by the first joint portions 58a, 58b, 58c, a space for passing the steering shaft 110 between the adjacent first joint portions 58b, 58c can be secured. Even when the steering shaft 110 is to be passed between the throttle body 60 and the throttle body 60, the steering shaft 110 can be attached.

  Since the first joint portions 58a, 58b, and 58c include an elastic body, the degree of freedom of the shape of the first joint portions 58a, 58b, and 58c is increased, and thus the steering shaft 110 is provided between the adjacent first joint portions 58b and 58c. It is easier to secure a space through which the steering shaft 110 can pass, and the steering shaft 110 can be attached more easily. In particular, when the first joint portions 58a, 58b, and 58c are made of polyalloy of nitrile rubber and polyvinyl chloride, the degree of freedom of shape is increased, and the clearance between the first joint portions 58b, 58c and the steering shaft 110 is easy. It can be secured.

  Since the interval between the adjacent first joint portions 58b and 58c through which the steering shaft 110 passes is larger than the interval between the other adjacent first joint portions 58a and 58b, the steering shaft 110 is interposed between the adjacent first joint portions 58b and 58c. And the position through which the steering shaft 110 is passed can be easily recognized.

  The first joint portions 58b, 58c and the engaging member 124 can be configured to escape from the steering shaft 110 by forming the concave portions 116a, 116b, 116c in the first joint portions 58b, 58c and the engaging member 124, respectively. In other words, the steering shaft 110 can be smoothly inserted into the space S formed by the intake manifold 56, the first joint portions 58b and 58c, and the engaging member 124.

  In the present invention, the restricting member 62 restricts the movement of the first joint portions 58a, 58b, 58c and prevents the first joint portions 58a, 58b, 58c from coming off. Can be used for engines with a supercharger. Therefore, the present invention can be suitably used for the snowmobile 10 equipped with the supercharger 52.

  The engine in the present invention may be single cylinder or multi-cylinder, but preferably has at least three cylinders.

  The throttle control is not limited to electronic throttle control, and mechanical throttle control may be used.

  The present invention is not limited to snowmobiles, and can be applied to any other transportation equipment.

DESCRIPTION OF SYMBOLS 10 Snowmobile 48 Engine 52 Supercharger 60 Throttle body 56 Intake manifold 58a, 58b, 58c 1st joint part 62 Restriction member 64 2nd joint part 74 Head part 78 Cylinder head 80 Head cover 82 Cylinder 110 Steering shaft 113a, 113b, 113 , 114a, 114b, 114c, 115a, 115b, 115c Groove portion 124 Engaging member 126a, 126b Connecting member 128a, 128b, 128c Engaging portion 130a, 130b Collar 132a, 132b Bolt

Claims (13)

An engine having a head portion including a cylinder head and a head cover provided on the cylinder head;
A throttle body for supplying intake air to the cylinder head;
A supercharger,
An intake manifold to which the supercharged air is sent from the supercharger;
A first joint portion for connecting the intake manifold and the throttle body so as to communicate with each other;
A transportation device comprising: a restricting member that connects the head part and the first joint part so as to restrict relative movement of the first joint part with respect to the head part.   The transport apparatus according to claim 1, wherein the first joint portion includes an elastic body. The first joint part includes a groove part formed on an outer peripheral surface thereof,
The transport device according to claim 1, wherein the limiting member includes an engaging member that fits into the groove portion, and a connecting member that connects the engaging member and the head portion. The groove portion is formed in an annular shape in the circumferential direction of the outer peripheral surface of the first joint portion,
The transportation device according to claim 3, wherein the engagement member has a substantially C-shaped engagement portion that fits into the groove portion.   The connection member includes a collar provided between the engagement member and the head portion, and a bolt that passes through the collar and connects the engagement member and the head portion. Transportation equipment as described in. The engine has a plurality of cylinders;
The first joint portion is provided for each cylinder,
The transportation device according to claim 3, wherein the engagement member is continuous with the plurality of first joint portions.   The transportation device according to claim 6, wherein the connecting member is provided on both sides of the plurality of cylinders.   The transportation device according to any one of claims 1 to 7, further comprising a second joint portion that connects the cylinder head and the throttle body and includes an elastic body.   The transportation apparatus according to claim 8, wherein the second joint portion includes a spigot. The engine has a plurality of cylinders;
The first joint portion is provided for each cylinder,
The transport device according to claim 1, further comprising a steering shaft passing between the adjacent first joint portions.   The transportation device according to claim 10, wherein the first joint portion includes an elastic body. The engine has at least three cylinders;
The transportation device according to claim 10 or 11, wherein an interval between adjacent first joint portions through which the steering shaft passes is larger than an interval between other adjacent first joint portions.   The transport device according to claim 1, wherein the transport device is a snowmobile.

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